Has anyone here designed or released a 65-card deck, with the old 1930s fifth suit? I've read about the United States Playing Card Company's "Green Eagle" suit (which, given the era, has some interesting implications), but a 65-card deck could add some interesting twists to some old tricks...

A company released a product called Stardeck a while ago that is not currently producing decks - potentially you could find them on ebay/other markets. There's also a cheap product on Amazon named 5Âº Dimension Playing Cards - quality looks poor if you plan on handling them too much.